5218020623 has 4 divisors (see below), whose sum is σ = 5222668248. Its totient is φ = 5213373000.

The previous prime is 5218020601. The next prime is 5218020667. The reversal of 5218020623 is 3260208125.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5218020623 - 2¹⁸ = 5217758479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5218020683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2322128 + ... + 2324373.

It is an arithmetic number, because the mean of its divisors is an integer number (1305667062).

Almost surely, 2^5218020623 is an apocalyptic number.

5218020623 is a deficient number, since it is larger than the sum of its proper divisors (4647625).

5218020623 is a wasteful number, since it uses less digits than its factorization.

5218020623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4647624.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 5218020623 is about 72235.8679812183. The cubic root of 5218020623 is about 1734.4772069143.

Adding to 5218020623 its reverse (3260208125), we get a palindrome (8478228748).

The spelling of 5218020623 in words is "five billion, two hundred eighteen million, twenty thousand, six hundred twenty-three".